Given that the equation $ax + 4 = 3x - b$ has more than 1 solution, find the value of $(4a + 3b)^{20202020}$

linear-algebra exponentiation

Welcome to MSE. $$ax+4=3x-b\\ax-3x=-b-4\\x(a-3)=-(b+4)$$when this equation has more than 1 solution ? ..... when both sides get zero.
$$x\times 0=0$$ has more than one solution

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